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ARM: dts: msm: Ignore dependencies on children by PM framework

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Change https://lore.kernel.org/all/20230525113034.46880-1-tony@atomide.com
registers serial core controller as a child of msm uart device.

Since child should suspend first, due to the child's auto suspend
delay (SERIAL_PORT_AUTOSUSPEND_DELAY_MS), additional 500msecs
delay is added during msm_geni_serial_runtime_suspend.

Added new dtsi flag 'qcom,suspend-ignore-children', to ignore
dependencies on children by runtime PM framework, this helps to
exit quickly from msm_geni_serial_runtime_suspend and save power.

Change-Id: Icac2f02ad96f45359cf1516284b7a64d2de61a79
Signed-off-by: Visweswara Tanuku <quic_vtanuku@quicinc.com>
This commit is contained in:
Visweswara Tanuku
2024-05-06 06:20:42 -07:00
parent 8c0df42f5b
commit d1b871dd54
1 changed files with 1 additions and 0 deletions
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qcom/sun-qupv3.dtsi
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@@ -1026,6 +1026,7 @@
pinctrl-3 = <&qupv3_se14_default_cts>, <&qupv3_se14_default_rts>, pinctrl-3 = <&qupv3_se14_default_cts>, <&qupv3_se14_default_rts>,
<&qupv3_se14_default_tx>, <&qupv3_se14_default_rx>; <&qupv3_se14_default_tx>, <&qupv3_se14_default_rx>;
qcom,wakeup-byte = <0xFD>; qcom,wakeup-byte = <0xFD>;
qcom,suspend-ignore-children;
status = "disabled"; status = "disabled";
}; };